LQT485M RS458 Model
Product Overview
The LQT485M temperature transmitter module is simultaneously suitable for signal transmission of up to ten types of thermocouples and RTDs. The LQT485M adopts comprehensive electrical isolation to reduce the damage and interference caused by high-current signals on the RS485 bus to the device. This product uses a 24-bit Σ-Δ analog front-end to ensure high measurement accuracy; comprehensive surge protection, lightning protection, and reverse polarity protection prevent improper installation and operation in engineering applications; enhanced software safety design includes functions such as low-voltage monitoring reset and multi-task scheduling optimization. The LQT485M is entirely built with industrial-grade components, ensuring a long service life and stability.
Key Features
- Supports multiple types of temperature sensor inputs
- High precision measurement with accuracy up to 0.1%
- Excellent temperature stability
- 4-20mA standard current output
- Wide operating voltage range
Technical Specifications
| Parameter | Specification | Parameter | Specification | |
|---|---|---|---|---|
| Operating Power | 12~35VDC | Output | RS485, Modbus | |
| Measurement Accuracy | RTD 0.1%; TC 0.2% | Output Current Limit | 20.0mA | |
| Excitation Current | 0.2mA | Sensor | Various RTDs, Thermocouples | |
| Load | ≤500Ω | Transport and Storage Temperature | -40~120℃ | |
| Temperature Coefficient | ≤50ppm/℃ F.S | Housing Material | PA66 | |
| Operating Temperature | -30~80℃ | Mounting Screws | M4*2 |
